Fig. 1. Structure of copper-clad ceramic DBC

Fig. 2. Multi-chip packaging process

Fig. 3. Schematic diagram of gate driving circuit

Fig. 4. Circuit of input stage interface

Fig. 5. Circuit of low dropout regulator(LDO)

Fig. 6. Circuit of output driving stage

Fig. 7. Layout of gate driving chip

Fig. 8. Test result of gate driving chip

Fig. 9. Laser driving chip and test system

Fig. 10. Waveform of laser pulse

Fig. 11. Test result of laser driving chip